Improvement in sewing-machine casters



.1. H. PLANK.

Sewing Machine Casters. N0t 139,606. u v Patentdlun 3.1873.`

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wh 55125: "i M QW 77m @le ,UNITED STATES PATENT OFFICE.

JOHN H. PLANK, OF BLOOMFIELD, IOWA.

IMPROVEMENT IN SEWINIGMACHINE CASTERS.

Specification forming part of Letters Patent No. 139,606, dated June 3, 1873; application led March 1, 1873.

chine leg and two casters at `one end and lapping each other at the other ends, where they are connected by a clamp-screw, so that said foot-rests can be adjusted to or from each other for machines of dierent sizes. These bars (resting upon the casters) are to receive the machine in the said foot-rests, so that it can be rolled about and the machine taken off and its legs set on the floor, when it is to sit {irmly for use. y

Figure lis a longitudinal sectional elevation of a pair of the aforesaid bars and cast! ers, the section being taken-011 the line y y of Fig. 2; and Fig. 2 is a horizontal section taken on the line a: .fr of Fig. 1. Fig. 3 is an end View of the device.

A represents the bars with a wide socket` plate, B, at one end adapted to receive the foot of a machine-leg, C, and having an ear or flange, D, projecting on each side at right angles to the bar, and having a hole, F, to receive the pintle of a caster, E, attached for the support of the bar. The two bars of a pair overlap each other at thc other ends, and are clamped together by bindingscrew F passing through slots, so that the foot-rests B can be adjusted to suit machines of di'erentsizes.

To prevent the bars from oscillating verticallyon the clamp-screw each one has a groove, I, along one side in which a stud, K, on the other fits in such manner that such oscillation is prevented. A pair of these bars is temporarily placed under each end of the machine when it is to be moved about,-and then taken away after it is moved.

The machine will be supported more firmly by these casters than bythe ordinary ones, because there are two bearing-points for each leg, so that in case it is desirable to work the machine while resting upon the casters it canbe done better by these than others.

Having thus described my inventon, I claim as new and desire to secure by Letters Patent- The device for supporting sewingmachines formed of the slotted bars AA, bolt F, footrests B, and casters E -E, arranged as specified.

J. H. PLANK. Witnesses:

D. R. ATLENDER, P. B. WAYLAND. 

